398490943 has 8 divisors (see below), whose sum is σ = 413272080. Its totient is φ = 383779200.

The previous prime is 398490923. The next prime is 398490947. The reversal of 398490943 is 349094893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398490943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398490947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5505 + ... + 28762.

It is an arithmetic number, because the mean of its divisors is an integer number (51659010).

Almost surely, 2^398490943 is an apocalyptic number.

398490943 is a deficient number, since it is larger than the sum of its proper divisors (14781137).

398490943 is a wasteful number, since it uses less digits than its factorization.

398490943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34697.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 398490943 is about 19962.2379256435. The cubic root of 398490943 is about 735.8785631551.

The spelling of 398490943 in words is "three hundred ninety-eight million, four hundred ninety thousand, nine hundred forty-three".